之(四) Nova安裝

手動安裝Openstack Mikita的第四部分: 計算服務Nova安裝. 這部分內容主要是對OpenStack Installation Guide for Red Hat Enterprise Linux and CentOS在Nova這部分內容的實踐總結.

首先, 我們在controller節點上部署Nova服務.

一. controller節點安裝前準備

1. 爲Nova創建數據庫

[root@controller ~]# mysql -u root -p

CREATE DATABASE nova_api;
CREATE DATABASE nova;

GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'localhost' \
  IDENTIFIED BY 'NOVA_DBPASS';
GRANT ALL PRIVILEGES ON nova_api.* TO 'nova'@'%' \
  IDENTIFIED BY 'NOVA_DBPASS';
GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'localhost' \
  IDENTIFIED BY 'NOVA_DBPASS';
GRANT ALL PRIVILEGES ON nova.* TO 'nova'@'%' \
  IDENTIFIED BY 'NOVA_DBPASS';

其中, NOVA_DBPASS是Nova訪問數據庫時使用的密碼.

2. 創建Service和API Endpoint

(1) 獲取admin-only CLI指令的權限

[root@controller ~]# . admin-openrc

(2) 創建nova用戶

[root@controller ~]# openstack user create --domain default --password-prompt nova

User Password:
Repeat User Password:
+-----------+----------------------------------+
| Field     | Value                            |
+-----------+----------------------------------+
| domain_id | 23445595d52c44be995b0b393870b5ef |
| enabled   | True                             |
| id        | a98e05efe7c54f7d901e5ca61f8a27f7 |
| name      | nova                             |
+-----------+----------------------------------+

這裏nova用戶的密碼爲: zzr.

(3) 把nova用戶增加到admin角色和service租戶

[root@controller ~]# openstack role add --project service --user nova admin

(4) 創建compute服務

[root@controller ~]# openstack service create --name nova \
  --description "OpenStack Compute" compute

+-------------+----------------------------------+
| Field       | Value                            |
+-------------+----------------------------------+
| description | OpenStack Compute                |
| enabled     | True                             |
| id          | 42730828ce28424ca64c1eed4260b824 |
| name        | nova                             |
| type        | compute                          |
+-------------+----------------------------------+

(5) 創建compute服務的Endpoints

public endpoint

[root@controller ~]# openstack endpoint create --region RegionOne \
  compute public http://controller:8774/v2.1/%\(tenant_id\)s

+--------------+-------------------------------------------+
| Field        | Value                                     |
+--------------+-------------------------------------------+
| enabled      | True                                      |
| id           | 1b90d3d65a16476dbe7a9e063a667132          |
| interface    | public                                    |
| region       | RegionOne                                 |
| region_id    | RegionOne                                 |
| service_id   | 42730828ce28424ca64c1eed4260b824          |
| service_name | nova                                      |
| service_type | compute                                   |
| url          | http://controller:8774/v2.1/%(tenant_id)s |
+--------------+-------------------------------------------+

internal endpoint

[root@controller ~]# openstack endpoint create --region RegionOne \
  compute internal http://controller:8774/v2.1/%\(tenant_id\)s

+--------------+-------------------------------------------+
| Field        | Value                                     |
+--------------+-------------------------------------------+
| enabled      | True                                      |
| id           | b48495ef28324beb9d68fda27a988300          |
| interface    | internal                                  |
| region       | RegionOne                                 |
| region_id    | RegionOne                                 |
| service_id   | 42730828ce28424ca64c1eed4260b824          |
| service_name | nova                                      |
| service_type | compute                                   |
| url          | http://controller:8774/v2.1/%(tenant_id)s |
+--------------+-------------------------------------------+

admin endpoint

[root@controller ~]# openstack endpoint create --region RegionOne \
  compute admin http://controller:8774/v2.1/%\(tenant_id\)s

+--------------+-------------------------------------------+
| Field        | Value                                     |
+--------------+-------------------------------------------+
| enabled      | True                                      |
| id           | 5481feea724849c9898889cfa6d90d94          |
| interface    | admin                                     |
| region       | RegionOne                                 |
| region_id    | RegionOne                                 |
| service_id   | 42730828ce28424ca64c1eed4260b824          |
| service_name | nova                                      |
| service_type | compute                                   |
| url          | http://controller:8774/v2.1/%(tenant_id)s |
+--------------+-------------------------------------------+

二. controller節點安裝nova組件

1. 安裝nova

[root@controller ~]# yum install openstack-nova-api openstack-nova-conductor \
  openstack-nova-console openstack-nova-novncproxy \
  openstack-nova-scheduler -y

2. 配置nova

編輯文件 /etc/nova/nova.conf :

配置數據庫訪問權限:

[DEFAULT]
...
enabled_apis = osapi_compute,metadata

[api_database]
...
connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova_api

[database]
...
connection = mysql+pymysql://nova:NOVA_DBPASS@controller/nova

配置RabbitMQ消息隊列的訪問權限:

[DEFAULT]
...
rpc_backend = rabbit

[oslo_messaging_rabbit]
...
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS

配置Identity service的訪問權限:

[DEFAULT]
...
auth_strategy = keystone

[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = zzr

其中, zzr爲上一步驟中爲nova用戶設置的密碼. 刪除[keystone_authtoken]裏的除了上述內容以外的東西.

configure the my_ip option to use the management interface IP address of the controller node:

[DEFAULT]
...
my_ip = 10.0.0.11

enable support for the Networking service:

[DEFAULT]
...
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver

其餘部分:

[vnc]
...
vncserver_listen = $my_ip
vncserver_proxyclient_address = $my_ip

[glance]
...
api_servers = http://controller:9292

[oslo_concurrency]
...
lock_path = /var/lib/nova/tmp

(3) 同步nove配置到數據庫

[root@controller ~]# su -s /bin/sh -c "nova-manage api_db sync" nova
[root@controller ~]# su -s /bin/sh -c "nova-manage db sync" nova

(4) 開啓Image服務

[root@controller ~]# systemctl enable openstack-nova-api.service \
  openstack-nova-consoleauth.service openstack-nova-scheduler.service \
  openstack-nova-conductor.service openstack-nova-novncproxy.service
[root@controller ~]# systemctl start openstack-nova-api.service \
  openstack-nova-consoleauth.service openstack-nova-scheduler.service \
  openstack-nova-conductor.service openstack-nova-novncproxy.service

配置完controller節點以後, 我們繼續在compute節點進行配置.

三. compute節點安裝nova

1. 安裝

[root@controller ~]# yum install openstack-nova-compute -y

2. 配置

編輯 /etc/nova/nova.conf 文件.

[DEFAULT]
...
rpc_backend = rabbit
auth_strategy = keystone
my_ip = 10.0.0.31
use_neutron = True
firewall_driver = nova.virt.firewall.NoopFirewallDriver

[oslo_messaging_rabbit]
...
rabbit_host = controller
rabbit_userid = openstack
rabbit_password = RABBIT_PASS

[keystone_authtoken]
...
auth_uri = http://controller:5000
auth_url = http://controller:35357
memcached_servers = controller:11211
auth_type = password
project_domain_name = default
user_domain_name = default
project_name = service
username = nova
password = zzr

[vnc]
...
enabled = True
vncserver_listen = 0.0.0.0
vncserver_proxyclient_address = $my_ip
novncproxy_base_url = http://controller:6080/vnc_auto.html

[glance]
...
api_servers = http://controller:9292

[oslo_concurrency]
...
lock_path = /var/lib/nova/tmp

判斷該虛擬機是否支持硬件加速:

[root@controller ~]# egrep -c '(vmx|svm)' /proc/cpuinfo

如果上述指令返回0, 說明該虛擬機不支持硬件加速, 則需進一步設置:

[libvirt]
...
virt_type = qemu

3. 啓動

[root@controller ~]# systemctl enable libvirtd.service openstack-nova-compute.service
[root@controller ~]# systemctl start libvirtd.service openstack-nova-compute.service

四. controller節點驗證

(1) 獲取admin-only CLI指令的權限

[root@controller ~]# . admin-openrc

(2) 查看可用的計算節點

[root@controller ~]# openstack compute service list

+----+------------------+------------+----------+---------+-------+----------------------------+
| Id | Binary           | Host       | Zone     | Status  | State | Updated At                 |
+----+------------------+------------+----------+---------+-------+----------------------------+
|  1 | nova-consoleauth | controller | internal | enabled | up    | 2016-08-01T12:42:06.000000 |
|  2 | nova-conductor   | controller | internal | enabled | up    | 2016-08-01T12:42:06.000000 |
|  3 | nova-scheduler   | controller | internal | enabled | up    | 2016-08-01T12:42:07.000000 |
|  6 | nova-compute     | compute1   | nova     | enabled | up    | 2016-08-01T12:42:04.000000 |
+----+------------------+------------+----------+---------+-------+----------------------------+

之(四) Nova安裝

一. controller節點安裝前準備

1. 爲Nova創建數據庫

2. 創建Service和API Endpoint

(1) 獲取admin-only CLI指令的權限

(2) 創建nova用戶

(3) 把nova用戶增加到admin角色和service租戶

(4) 創建compute服務

(5) 創建compute服務的Endpoints

二. controller節點安裝nova組件

1. 安裝nova

2. 配置nova

(3) 同步nove配置到數據庫

(4) 開啓Image服務

三. compute節點安裝nova

1. 安裝

2. 配置

3. 啓動

四. controller節點驗證

(1) 獲取admin-only CLI指令的權限

(2) 查看可用的計算節點

參考文獻

之(五) 條件表達式

之(四) Nova安裝

之(二) Keystone安裝

之(三) Glance安裝

之(四) set集合

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